Ottawa’s choice for home comfort – for 50 years

Reliance Holmes™ Heating and Cooling is Ottawa's premier heating, air conditioning, and ventilation solutions supplier. For quality products, superior service and guaranteed results, it has to be Reliance Holmes.

With over 50 years of experience in providing quality heating and cooling in Ottawa, we're proud of our excellent reputation for quality and integrity.​ Our team of skilled licensed technicians are all trained and are TSSA-licensed and able to install and service any make or model of furnace or air conditioner to ensure your system operates at maximum efficiency. We have over 60 employees in the Ottawa office including a technical staff of over 40 trained and licenced professionals.
Our highly skilled sales staff is always ready to help you with all your needs – they are determined to help find the right home comfort solution for you home and budget and offer FREE no obligation in home consultations.

If you’re in an emergency no-heat situation, call our emergency response number 24/7 and we’ll send someone to your door quickly.

Our History: William Edward Holmes first established Holmes Heating Inc. in 1962, building the business on the belief that our customers deserve to be treated with the highest degree of integrity and receive quality heating, cooling, and indoor air quality products and services at the most affordable prices.
In 2009, Reliance Comfort Limited Partnership acquired the assets of Holmes Heating and has become one of the largest and best known HVAC sales and service providers in Ottawa –serving more than 25,000 homes in the National Capital Region, from Almonte to Orleans and Kanata to Carleton Place.

We are centrally located, allowing us to cover all of Ottawa's heating and cooling needs. Our 30-truck fleet travels to homes across the National Capital Region. No matter if you live in Ottawa, Kanata, Orleans, Barrhaven, Stittsville, Richmond, Nepean, Manotick or anywhere in between.

Whether you are looking to rent or buy a new gas furnace, water heater, boiler, or air conditioner, or simply tune-up your existing equipment, we’re here to help!

The Reliance Ottawa team services the following areas:

  • Ottawa
  • Richmond
  • Gloucester
  • Riverside South
  • Greely
  • Orleans
  • Kanata
  • Nepean
  • Barrhaven
  • Carleton Place
  • Manotick
  • Osgoode
  • Bells Corners
  • Navan
  • Blackburn Hamlet
  • Hawkesbury
  • Laurentian Hills
  • Mississippi Mills
  • Perth
  • Petawawa
  • Renfrew
  • Smiths Falls
  • Lanark
  • Ashton
  • Metcalf
  • Osgoode
  • Kinburn
  • Fitzroy Harbour
  • Vanier
  • Dunrobin
  • Constance Bay
  • Dwyer Hill
  • Kars

Products & Services we offer:

  • Furnaces
  • Boilers
  • Heat pumps
  • Ductless mini split system
  • Air handlers
  • Packaged HVAC units
  • Garage heaters
  • Humidifiers
  • Air conditioners
  • Ductless air conditioners
  • Programmable thermostats
  • Water filtration systems
  • Furnace repairs, service, tune-ups, maintenance and protection plans
  • Water heaters
  • Plumbing services and repairs
  • Tankless water heaters
  • Water softeners
  • AC repairs, service, tune-ups, maintenance and protection plans
  • Duct cleaning